Linear bathtub



FIG. 1 is a perspective view of the bathtub of the present invention;

FIG. 2 is a bottom plan view of the bathtub;

FIG. 3 is a top plan view of the bathtub;

FIG. 4 is a front side view of the bathtub;

FIG. 5 is a rear side view of the bathtub;

FIG. 6 is an end view of the bathtub; and,

FIG. 7 is an end view of the bathtub from the end opposite FIG. 6. 

I claim the ornamental design for a linear bathtub, as shown. 